<?php
namespace app\admin\model;
use think\Model;
// 关键字模型
class Keywords extends Model
{
	// 关联关键字
	public function increase($keywords)
	{
		$is_exist = $this->where('title',$keywords)->find();
		if( $is_exist ){
			$res = $is_exist['id'];
		}else{
			$res = $this->strict(false)->field(true)->insertGetId(['title' => $keywords,'create_time' => time()]);
		}
		return $res;
	}
}